<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(items , index) in titles" 
                    :key="items.index" 
                    class="title-item"
                    :class="{active:index === currentIndex}"
                    @click='titleClick(index)' >{{items}}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'

export default {
  name:"DetailNavBar",
  components:{
    NavBar
  },
  // props:{

  // },
  data(){
    return{
      titles:['商品','参数','评论','推荐'],
      currentIndex:0
    }
  },
  methods:{
    titleClick(index){
      this.currentIndex = index
      this.$emit('titleClick',index)
      
    },
    backClick(){
      this.$router.back()
    }
  }
}
</script>

<style scoped>
  .title{
    display: flex;
    font-size: 13px;
    
  }
  .title-item{
    flex:1;
  
  }
  .active{
    color:var(--color-high-text)
  }
  .back img{
    margin-top: 12px;
  }
</style>